Datasheet

Complete, Direct-Conversion
Tuner for DVB-S2 Applications
INPUT RETURN LOSS vs. FREQUENCY
MAX2112 toc17
FREQUENCY (MHz)
INPUT RETURN LOSS (dB)
202518001350 15751125
-20
-15
-10
-5
0
-25
900 2250
V
GC1
= 2.7V
V
GC1
= 0.5V
PHASE NOISE AT 10kHz OFFSET vs.
CHANNEL FREQUENCY
CHANNEL FREQUENCY (MHz)
PHASE NOISE AT 10kHz OFFSET (dBc/Hz)
MAX2112 toc18
925 1115 1305 1495 1685 1875 2065 2255
-105
-100
-95
-90
PHASE NOISE vs. OFFSET FREQUENCY
MAX2112 toc19
OFFSET FREQUENCY (Hz)
PHASE NOISE (dBc/Hz)
1.0E+051.0E+04
-120
-110
-100
-90
-130
1.0E+03 1.0E+06
f
LO
= 1800MHz
VCO: KV vs. VTUNE
VTUNE (V)
KV (MHz/V)
MAX2112 toc21
0 0.5 1.0 1.5 2.0 2.5 3.0
0
50
100
150
200
250
300
350
400
450
SUB-BAND 23
SUB-BAND 12
SUB-BAND 0
LO LEAKAGE vs. LO FREQUENCY
LO FREQUENCY (MHz)
LO LEAKAGE (dBm)
MAX2112 toc20
925 1175 1425 1675 1925 2175
-90
-85
-80
-75
-70
MEASURED AT RF INPUT
Typical Operating Characteristics (continued)
(MAX2112 Evaluation Kit: V
CC
= +3.3V, T
A
= +25°C, baseband output frequency = 5MHz; V
GC1
= +1.2V, default register settings
except BBG[3:0] = 1011.)
MAX2112
Maxim Integrated
7